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  1. Mar 13, 2014
  3. Mar 12, 2014
  5. Mar 11, 2014
  7. Mar 10, 2014
    • Michael Chan's avatar
      bnx2: Fix shutdown sequence · a8d9bc2e
      Michael Chan authored 
      The pci shutdown handler added in:

    bnx2: Add pci shutdown handler
    commit 25bfb1dd



created a shutdown down sequence without chip reset if the device was
never brought up.  This can cause the firmware to shutdown the PHY
prematurely and cause MMIO read cycles to be unresponsive.  On some
systems, it may generate NMI in the bnx2's pci shutdown handler.

The fix is to tell the firmware not to shutdown the PHY if there was
no prior chip reset.

Signed-off-by: default avatarMichael Chan <mchan@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a8d9bc2e
  9. Mar 08, 2014
  11. Mar 07, 2014
    • Sabrina Dubroca's avatar
      ipv6: don't set DST_NOCOUNT for remotely added routes · c88507fb
      Sabrina Dubroca authored 
      

DST_NOCOUNT should only be used if an authorized user adds routes
locally. In case of routes which are added on behalf of router
advertisments this flag must not get used as it allows an unlimited
number of routes getting added remotely.

Signed-off-by: default avatarSabrina Dubroca <sd@queasysnail.net>
Acked-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c88507fb
    • Amir Vadai's avatar
      net/mlx4_core: mlx4_init_slave() shouldn't access comm channel before PF is ready · 97989356
      Amir Vadai authored 
      

Currently, the PF call to pci_enable_sriov from the PF probe function
stalls for 10 seconds times the number of VFs probed on the host. This
happens because the way for such VFs to determine of the PF
initialization finished, is by attempting to issue reset on the
comm-channel and get timeout (after 10s).

The PF probe function is called from a kenernel workqueue, and therefore
during that time, rcu lock is being held and kernel's workqueue is
stalled. This blocks other processes that try to use the workqueue
or rcu lock.  For example, interface renaming which is calling
rcu_synchronize is blocked, and timedout by systemd.

Changed mlx4_init_slave() to allow VF probed on the host to immediatly
detect that the PF is not ready, and return EPROBE_DEFER instantly.

Only when the PF finishes the initialization, allow such VFs to
access the comm channel.

This issue and fix are relevant only for probed VFs on the hypervisor,
there is no way to pass this information to a VM until comm channel is
ready, so in a VM, if PF is not ready, the first command will be timedout
after 10 seconds and return EPROBE_DEFER.

Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      97989356
    • Amir Vadai's avatar
      net/mlx4_core: Fix memory access error in mlx4_QUERY_DEV_CAP_wrapper() · 57352ef4
      Amir Vadai authored 
      Fix a regression introduced by [1]. outbox was accessed instead of
outbox->buf. Typo was copy-pasted to [2] and [3].

[1] - cc1ade94 mlx4_core: Disable memory windows for virtual functions
[2] - 4de65803 mlx4_core: Add support for steerable IB UD QPs
[3] - 7ffdf726

 net/mlx4_core: Add basic support for TCP/IP offloads under
      tunneling

Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      57352ef4
    • Sasha Levin's avatar
      bonding: correctly handle out of range parameters for lp_interval · 5bd4e4c1
      Sasha Levin authored 
      We didn't correctly check cases where the value for lp_interval is not
within the legal range due to a missing table terminator.

This would let userspace trigger a kernel panic by specifying a value out
of range:

	echo -1 > /sys/devices/virtual/net/bond0/bonding/lp_interval

Introduced by commit 4325b374

 ("bonding: convert lp_interval to use
the new option API").

Acked-by: default avatarNikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: default avatarSasha Levin <sasha.levin@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5bd4e4c1
    • Anton Nayshtut's avatar
      ipv6: Fix exthdrs offload registration. · d2d273ff
      Anton Nayshtut authored 
      

Without this fix, ipv6_exthdrs_offload_init doesn't register IPPROTO_DSTOPTS
offload, but returns 0 (as the IPPROTO_ROUTING registration actually succeeds).

This then causes the ipv6_gso_segment to drop IPv6 packets with IPPROTO_DSTOPTS
header.

The issue detected and the fix verified by running MS HCK Offload LSO test on
top of QEMU Windows guests, as this test sends IPv6 packets with
IPPROTO_DSTOPTS.

Signed-off-by: default avatarAnton Nayshtut <anton@swortex.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d2d273ff
    • Anton Blanchard's avatar
      ibmveth: Fix endian issues with MAC addresses · d746ca95
      Anton Blanchard authored 
      

The code to load a MAC address into a u64 for passing to the
hypervisor via a register is broken on little endian.

Create a helper function called ibmveth_encode_mac_addr
which does the right thing in both big and little endian.

We were storing the MAC address in a long in struct ibmveth_adapter.
It's never used so remove it - we don't need another place in the
driver where we create endian issues with MAC addresses.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d746ca95
    • Anton Blanchard's avatar
      net: unix socket code abuses csum_partial · 0a13404d
      Anton Blanchard authored 
      

The unix socket code is using the result of csum_partial to
hash into a lookup table:

	unix_hash_fold(csum_partial(sunaddr, len, 0));

csum_partial is only guaranteed to produce something that can be
folded into a checksum, as its prototype explains:

 * returns a 32-bit number suitable for feeding into itself
 * or csum_tcpudp_magic

The 32bit value should not be used directly.

Depending on the alignment, the ppc64 csum_partial will return
different 32bit partial checksums that will fold into the same
16bit checksum.

This difference causes the following testcase (courtesy of
Gustavo) to sometimes fail:

#include <sys/socket.h>
#include <stdio.h>

int main()
{
	int fd = socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC, 0);

	int i = 1;
	setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &i, 4);

	struct sockaddr addr;
	addr.sa_family = AF_LOCAL;
	bind(fd, &addr, 2);

	listen(fd, 128);

	struct sockaddr_storage ss;
	socklen_t sslen = (socklen_t)sizeof(ss);
	getsockname(fd, (struct sockaddr*)&ss, &sslen);

	fd = socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC, 0);

	if (connect(fd, (struct sockaddr*)&ss, sslen) == -1){
		perror(NULL);
		return 1;
	}
	printf("OK\n");
	return 0;
}

As suggested by davem, fix this by using csum_fold to fold the
partial 32bit checksum into a 16bit checksum before using it.

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0a13404d
    • Andrew Lutomirski's avatar
      net: Improve SO_TIMESTAMPING documentation and fix a minor code bug · adca4767
      Andrew Lutomirski authored 
      

The original documentation was very unclear.

The code fix is presumably related to the formerly unclear
documentation: SOCK_TIMESTAMPING_RX_SOFTWARE has no effect on
__sock_recv_timestamp's behavior, so calling __sock_recv_ts_and_drops
from sock_recv_ts_and_drops if only SOCK_TIMESTAMPING_RX_SOFTWARE is
set is pointless.  This should have no user-observable effect.

Signed-off-by: default avatarAndy Lutomirski <luto@amacapital.net>
Acked-by: default avatarRichard Cochran <richardcochran@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      adca4767